Editing Military Message Handling System

{{third-party|date=September 2018}}
'''Military Message Handling System''' ('''MMHS''') is a profile and set of extensions to [[X.400]] for messaging in military environments. It is [[NATO]] standard [[STANAG]] 4406 and [[CCEB]] standard [[ACP 123]]. It adds to standard X.400 email support for military requirements such as [[mandatory access control]] (i.e. [[classified information|Classified]]/[[classified information#Secret|Secret]]/[[Top Secret]] messages and users, etc.).  In particular it defines a new message format, P772 that is used in place of X.400's interpersonal message formats P2 (1984 standard) and P22 (1988 standard). 

MMHS specifications are implemented by several X.400 vendors, particularly those located in Europe, such as [[Raytheon]] UK, [[Boldon James]],<ref>{{cite web|url=http://www.boldonjames.com/defence-98|title=Military Messaging - Boldon James|website=www.boldonjames.com}}</ref> Deep-Secure, [[Thales Group]], [[Nexor]], [[Cassidian]] and Isode.

Several RFC are supported:
<ref>RFC 6477 - Registration of Military Message Handling System (MMHS) Header Fields for Use in Internet Mail</ref>

== Implementations ==

{| class="wikitable sortable"
|-
! vendor !! Software !! Security evaluation
|-
| [[Thales Group]] || [https://www.ia.nato.int/niapc/Product/XOmail-ACP-127-Gateway_656 XOmail] || CC EAL 4
|-
| Isode || [https://www.isode.com/products/m-switch-x400-military.html M-Switch] || NA
|-
|[[Systematic Software Engineering|Systematic]]
|IRIS
|MIL-STD-6017
|-
| EID || [https://www.eid.pt/what-we-do/military-messaging/ MOST-4 MMHS] || NA
|}

== See also ==
* [[Defense Message System]]
* [[Automated Message Handling System]]

==References==
{{Reflist}}

{{US-mil-stub}}
{{standard-stub}}
[[Category:Email]]